Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
tham xuc » tham nuoc, pham duc, cam xuc
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang ma » tang ma, sang ma, nang cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach vu nang ma hoa. lieu va ((tham xuc) or (tham thuc)) ((van hanh) OR (ban hanh)) ky su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach vu nang ma hoa. lieu va ((tham xuc) OR (tham thuc)) ((van hanh) OR (ban hanh)) ky su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach vu nang ma hoa. lieu va ((tham xuc) or (tham thuc)) ((van hanh) OR (ban hanh)) ky su triet".
• Adding a wildcard symbol may retrieve word variants: su sach vu nang ma hoa. lieu va ((tham xuc) or (tham thuc)) ((van hanh) OR (ban hanh)) ky su triet*.